获取三个数据的最大值:

class Hello2 {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        int c = 30;
        int max;
        if (a > b){
            if (a > c)
            {
                max = a;
            }else {
                max = c;
            }
        }else {
            if (b < c)
            {
                max = c;
            }else {
                max = b;
            }
        }
        System.out.println("max = " + max);
    }
}

结果: